I can confirm this bug as I've seen the same behavior. After a fresh boot, when I log in my CPU is running at 100% and the culprit is sreadahead. sreadahead then exits after a minute or so. If you want, you can disable sreadahead by editing the file at /etc/init/sreadahead.conf and commenting out the line that reads:
exec /sbin/sreadahead -t 0
I did this on my Thinkpad R61 (with a spinning hard drive) and my boot time dropped from 61 seconds to 49 seconds.
I can confirm this bug as I've seen the same behavior. After a fresh boot, when I log in my CPU is running at 100% and the culprit is sreadahead. sreadahead then exits after a minute or so. If you want, you can disable sreadahead by editing the file at /etc/init/ sreadahead. conf and commenting out the line that reads:
exec /sbin/sreadahead -t 0
I did this on my Thinkpad R61 (with a spinning hard drive) and my boot time dropped from 61 seconds to 49 seconds.